<template>
	<div class="my-tab-bar">
		<div class="tab-item" 
		  :class="{current: type === index}"
			@click="change(index, item.componentName)"
		  v-for="(item, index) in arr" :key="index">
			<!-- 图标 -->
			<span class="iconfont" :class="item.iconText"></span>
			<!-- 文字 -->
			<span>{{ item.text }}</span>
		</div>
	</div>
</template>

<script>
	export default {
      props: {
				arr: {
					type: Array,
				  required: true,
          // 自定义校验规则  validator
					validator(value) {
             if(value.length >= 2 && value.length <=5){
                 return true
						 }else{
							  return false
						 }
					}
				}
			},

			data() {
				 return {
					   type: 0,   //设置默认值下标 显示高亮
				 }
			},

			methods: {
				  // todo === 点击谁控制谁高亮
          change(index, comName){
               this.type = index

							 this.$emit('change', comName);
					}

			}
	}
</script>

<style lang="less" scoped>
	.my-tab-bar {
		position: fixed;
		left: 0;
		bottom: 0;
		width: 100%;
		height: 50px;
		border-top: 1px solid #ccc;
		display: flex;
		justify-content: space-around;
		align-items: center;
		background-color: white;

		.tab-item {
			display: flex;
			flex-direction: column;
			align-items: center;
		}
	}

	.current {
		color: #1d7bff;
	}
</style>
